{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:42.698429", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2011-Jun-20_to_2011-Jun-22_30.0_17.0"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2011060001022}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "June 20 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 22 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 61830.23155697783}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 17.0}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 30.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "30.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 26.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 30.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-06-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.25, 19.0], [26.47, 19.53], [27.0, 19.75], [27.53, 19.53], [27.68, 19.18], [27.75, 19.15], [28.0, 19.25], [28.25, 19.15], [28.5, 19.25], [28.75, 19.15], [29.0, 19.25], [29.25, 19.15], [29.5, 19.25], [30.03, 19.03], [30.25, 18.5], [30.15, 18.25], [30.18, 18.18], [30.53, 18.03], [30.68, 17.68], [31.03, 17.53], [31.25, 17.0], [31.15, 16.75], [31.25, 16.5], [31.03, 15.97], [30.5, 15.75], [30.0, 15.96], [29.5, 15.75], [28.97, 15.97], [28.82, 16.32], [28.47, 16.47], [28.32, 16.82], [28.25, 16.85], [28.0, 16.75], [27.47, 16.97], [27.25, 17.5], [27.35, 17.75], [27.32, 17.82], [26.97, 17.97], [26.82, 18.32], [26.47, 18.47], [26.25, 19.0]]]]}, "2011-06-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.25, 19.0], [26.47, 19.53], [27.0, 19.75], [27.53, 19.53], [27.68, 19.18], [27.75, 19.15], [28.0, 19.25], [28.25, 19.15], [28.5, 19.25], [28.75, 19.15], [29.0, 19.25], [29.25, 19.15], [29.5, 19.25], [30.03, 19.03], [30.25, 18.5], [30.15, 18.25], [30.18, 18.18], [30.53, 18.03], [30.68, 17.68], [31.03, 17.53], [31.25, 17.0], [31.15, 16.75], [31.25, 16.5], [31.03, 15.97], [30.5, 15.75], [30.0, 15.96], [29.5, 15.75], [28.97, 15.97], [28.82, 16.32], [28.47, 16.47], [28.32, 16.82], [28.25, 16.85], [28.0, 16.75], [27.47, 16.97], [27.25, 17.5], [27.35, 17.75], [27.32, 17.82], [26.97, 17.97], [26.82, 18.32], [26.47, 18.47], [26.25, 19.0]]]]}, "2011-06-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[26.25, 19.0], [26.47, 19.53], [27.0, 19.75], [27.53, 19.53], [27.68, 19.18], [27.75, 19.15], [28.0, 19.25], [28.25, 19.15], [28.5, 19.25], [28.75, 19.15], [29.0, 19.25], [29.25, 19.15], [29.5, 19.25], [30.03, 19.03], [30.25, 18.5], [30.15, 18.25], [30.18, 18.18], [30.53, 18.03], [30.68, 17.68], [31.03, 17.53], [31.25, 17.0], [31.15, 16.75], [31.25, 16.5], [31.03, 15.97], [30.5, 15.75], [30.0, 15.96], [29.5, 15.75], [28.97, 15.97], [28.82, 16.32], [28.47, 16.47], [28.32, 16.82], [28.25, 16.85], [28.0, 16.75], [27.47, 16.97], [27.25, 17.5], [27.35, 17.75], [27.32, 17.82], [26.97, 17.97], [26.82, 18.32], [26.47, 18.47], [26.25, 19.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.718114445730805}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.9562062137525924}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [30.095023585606953, 29.55341130136685, 30.250011243903373]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.98388183856315, 27.51622948172252, 27.927162426935297]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.803975246934813, -3.3916184293153018, -2.6730249650076634]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.47823759398608, -3.718114445730805, -3.0945663038913835]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.709181394361477, -2.0555992333036266, -1.580644699445829]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9848018872862179, -2.4033126951038004, -2.0801019045300007]}}